I haven't got a close-up pic of the 660 mount.
But here's (a partial) one of the 550 mounted on my previous Ten. I would recommend using the Rammount I posted earlier in stead of the one shown in the picture below. It gives you a bit more clearance from the screen and more flexibility in positioning the Zumo just right for you..



Here's a more recent one with the 660 mount. If you squint you can see how it is positioned above the cockpit.